He will do the normal thing. Become a director to a company for a few years then turn to being a lobbyist and or write a mediocre autobiography.

As soon as he receives his cheque from the indian government, he is.
Eitherway, MPs have a salary of 200k, and can have 60% of that from his pension (source: chatgpt). It may not be "rich" rich, but far enough not to have to work his entire life. Too bad he won't have the special amount for the Prime Minister, though...

He's conservative. It's a small club of rich people trying to fuck over the others and PP is their custom built celebrity for their cause - if he doesn't have too much money then the people paying for his campaign do and bought him his bespoke Alberta cowboy look.

Rich in Canada means you can buy Tim Horton's without even checking the prices on the menu